Finding the Third Proportional to 386,438.50 and 841,520

Step by Step Solution

1. Step 1: Write the proportion equation
   386,438.50 : 841,520 = 841,520 : x
2. Step 2: Convert to fraction form
   386,438.50/841,520 = 841,520/x
3. Step 3: Cross multiply
   386,438.50x = 841,520 × 841,520
4. Step 4: Simplify right side
   386,438.50x = 708,155,910,400
5. Step 5: Solve for x
   x = 708,155,910,400/386,438.50
6. Step 6: Final answer
   x = 1,832,519.04